349 lines
10 KiB
C++
349 lines
10 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2013 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more det.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "mpduser.h"
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#include "config.h"
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#include "utils.h"
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#include "localize.h"
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#include "settings.h"
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#include <QTextStream>
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#include <QProcess>
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#include <QDir>
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#include <QFile>
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#include <QFileInfo>
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#include <QSet>
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#include <QCoreApplication>
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#include <signal.h>
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#if defined Q_OS_WIN
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#include <QDesktopServices>
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#endif
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#ifdef ENABLE_KDE_SUPPORT
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#include <KDE/KGlobal>
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K_GLOBAL_STATIC(MPDUser, instance)
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#endif
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const QString MPDUser::constName=QLatin1String("-");
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static const QString constDir=QLatin1String("mpd");
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static const QString constConfigFile=QLatin1String("mpd.conf");
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static const QString constMusicFolderKey=QLatin1String("music_directory");
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static const QString constSocketKey=QLatin1String("bind_to_address");
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static const QString constPlaylistsKey=QLatin1String("playlist_directory");
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static const QString constPidKey=QLatin1String("pid_file");
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QString MPDUser::translatedName()
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{
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return i18n("Personal");
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}
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MPDUser * MPDUser::self()
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{
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#ifdef ENABLE_KDE_SUPPORT
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return instance;
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#else
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static MPDUser *instance=0;
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if(!instance) {
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instance=new MPDUser;
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}
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return instance;
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#endif
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}
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MPDUser::MPDUser()
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{
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// For now, per-user MPD support is disabled for windows builds
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// - as I'm unsure how/if MPD works in windows!!!
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// - If enable, also need to fix isRunning!!
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#ifndef Q_OS_WIN
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mpdExe=Utils::findExe("mpd");
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#endif
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det.name=constName;
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}
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bool MPDUser::isSupported()
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{
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return !mpdExe.isEmpty();
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}
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bool MPDUser::isRunning()
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{
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#ifdef Q_OS_WIN
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return false;
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#else
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int pid=getPid();
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return pid ? 0==::kill(pid, 0) : false;
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#endif
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}
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static QString readValue(const QString &line, const QString &key)
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{
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if (line.startsWith(key)) {
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int start=line.indexOf("\"");
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int end=-1==start ? -1 : line.indexOf("\"", start+1);
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if (-1!=end) {
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return line.mid(start+1, (end-start)-1);
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}
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}
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return QString();
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}
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void MPDUser::start()
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{
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if (isRunning() || mpdExe.isEmpty()) {
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return;
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}
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init(true);
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if (!det.dir.isEmpty() && !det.hostname.isEmpty()) {
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controlMpd(false);
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}
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}
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void MPDUser::stop()
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{
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if (!isRunning() || mpdExe.isEmpty()) {
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return;
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}
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init(false);
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controlMpd(true);
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}
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void MPDUser::setMusicFolder(const QString &folder)
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{
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if (folder==det.dir) {
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return;
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}
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QFile cfgFile(Utils::configDir(constDir, true)+constConfigFile);
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QStringList lines;
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if (cfgFile.open(QIODevice::ReadOnly|QIODevice::Text)) {
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while (!cfgFile.atEnd() && (det.dir.isEmpty() || det.hostname.isEmpty())) {
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QString line = cfgFile.readLine();
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if (line.startsWith(constMusicFolderKey)) {
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lines.append(constMusicFolderKey+" \""+folder+"\"");
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} else {
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lines.append(line);
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}
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}
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}
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if (!lines.isEmpty()) {
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cfgFile.close();
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if (cfgFile.open(QIODevice::WriteOnly|QIODevice::Text)) {
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QTextStream out(&cfgFile);
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foreach (const QString &line, lines) {
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out << line << endl;
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}
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}
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}
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det.dir=folder;
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det.dirReadable=QDir(det.dir).isReadable();
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}
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static void removeDir(const QString &d)
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{
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if (d.isEmpty()) {
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return;
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}
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QDir dir(d);
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if (dir.exists()) {
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QString dirName=dir.dirName();
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if (!dirName.isEmpty()) {
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dir.cdUp();
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dir.rmdir(dirName);
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}
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}
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}
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void MPDUser::cleanup()
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{
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QString cfgFileName(Utils::configDir(constDir, false)+constConfigFile);
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QFile cfgFile(cfgFileName);
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QSet<QString> files;
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QSet<QString> dirs;
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QString playlistDir;
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if (cfgFile.open(QIODevice::ReadOnly|QIODevice::Text)) {
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QStringList fileKeys=QStringList() << constPidKey << constSocketKey << QLatin1String("db_file")
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<< QLatin1String("state_file") << QLatin1String("sticker_file");
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QStringList dirKeys=QStringList() << constPlaylistsKey;
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while (!cfgFile.atEnd()) {
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QString line = cfgFile.readLine();
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foreach (const QString &key, fileKeys) {
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if (line.startsWith(key)) {
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QString file=readValue(line, key);
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if (!file.isEmpty()) {
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QString dir=Utils::getDir(file);
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if (!dir.isEmpty()) {
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dirs.insert(dir);
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}
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files.insert(file);
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fileKeys.removeAll(key);
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}
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}
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}
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if (playlistDir.isEmpty() && line.startsWith(constPlaylistsKey)) {
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playlistDir=readValue(line, constPlaylistsKey);
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}
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}
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files.insert(cfgFileName);
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dirs.insert(Utils::getDir(cfgFileName));
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}
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if (!dirs.isEmpty() && !files.isEmpty()) {
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foreach (const QString &f, files) {
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QFile::remove(f);
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}
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if (!playlistDir.isEmpty()) {
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QFileInfoList files=QDir(playlistDir).entryInfoList(QStringList() << "*.m3u", QDir::Files|QDir::NoDotAndDotDot);
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foreach (const QFileInfo &file, files) {
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QFile::remove(file.absoluteFilePath());
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}
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removeDir(playlistDir);
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}
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foreach (const QString &d, dirs) {
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removeDir(d);
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}
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removeDir(Utils::configDir(constDir, false));
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removeDir(Utils::cacheDir(constDir, false));
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}
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}
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void MPDUser::init(bool create)
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{
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if (det.dir.isEmpty() || det.hostname.isEmpty() || pidFileName.isEmpty()) {
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// Read coverFileName from Cantata settings...
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det.coverName=Settings::self()->connectionDetails(constName).coverName;
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det.dirReadable=false;
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// Read music folder and socket from MPD conf file...
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QString cfgDir=Utils::configDir(constDir, create);
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QString cfgName(cfgDir+constConfigFile);
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QString playlists;
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if (create && !QFile::exists(cfgName)) {
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// Conf file does not exist, so we need to create one...
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#ifdef Q_OS_WIN
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QFile cfgTemplate(QCoreApplication::applicationDirPath()+"/mpd/"+constConfigFile+".template");
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#else
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QFile cfgTemplate(INSTALL_PREFIX"/share/cantata/mpd/"+constConfigFile+".template");
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#endif
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if (cfgTemplate.open(QIODevice::ReadOnly|QIODevice::Text)) {
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QFile cfgFile(cfgName);
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if (cfgFile.open(QIODevice::WriteOnly|QIODevice::Text)) {
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QString homeDir=QDir::homePath();
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QString cacheDir=Utils::cacheDir(constDir, create);
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QTextStream out(&cfgFile);
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while (!cfgTemplate.atEnd()) {
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QString line = cfgTemplate.readLine();
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line=line.replace(QLatin1String("${HOME}"), homeDir);
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line=line.replace(QLatin1String("${CONFIG_DIR}"), cfgDir);
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line=line.replace(QLatin1String("${CACHE_DIR}"), cacheDir);
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line=line.replace("//", "/");
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out << line;
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if (det.dir.isEmpty()) {
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det.dir=readValue(line, constMusicFolderKey);
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}
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if (det.hostname.isEmpty()) {
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det.hostname=readValue(line, constSocketKey);
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}
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if (pidFileName.isEmpty()) {
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pidFileName=readValue(line, constPidKey);
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}
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// Create playlists dir...
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if (playlists.isEmpty()) {
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playlists=readValue(line, constPlaylistsKey);
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if (!playlists.isEmpty()) {
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Utils::createDir(playlists, QString());
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}
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}
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}
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}
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}
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}
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if (det.dir.isEmpty() || det.hostname.isEmpty() || pidFileName.isEmpty()) {
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QFile cfgFile(cfgName);
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if (cfgFile.open(QIODevice::ReadOnly|QIODevice::Text)) {
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while (!cfgFile.atEnd() && (det.dir.isEmpty() || det.hostname.isEmpty() || pidFileName.isEmpty())) {
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QString line = cfgFile.readLine();
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if (det.dir.isEmpty()) {
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det.dir=readValue(line, constMusicFolderKey);
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}
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if (det.hostname.isEmpty()) {
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det.hostname=readValue(line, constSocketKey);
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}
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if (pidFileName.isEmpty()) {
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pidFileName=readValue(line, constPidKey);
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}
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}
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}
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det.dirReadable=QDir(det.dir).isReadable();
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}
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det.name=constName;
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}
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}
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int MPDUser::getPid()
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{
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int pid=0;
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init(false);
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if (!pidFileName.isEmpty()) {
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QFile pidFile(pidFileName);
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if (pidFile.open(QIODevice::ReadOnly|QIODevice::Text)) {
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QTextStream str(&pidFile);
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str >> pid;
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}
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}
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return pid;
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}
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bool MPDUser::controlMpd(bool stop)
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{
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QStringList args=QStringList() << Utils::configDir(constDir, true)+constConfigFile;
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if (stop) {
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args+="--kill";
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}
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qint64 appPid=0;
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bool started=QProcess::startDetached(mpdExe, args, QString(), &appPid);
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if (started && !stop && 0!=appPid) {
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for (int i=0; i<8; ++i) {
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if (getPid()!=appPid) {
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Utils::msleep(250);
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} else {
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Utils::msleep(250);
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return true;
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}
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}
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}
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return started;
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}
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